Flora of North America species comparison

dark brown to ± black (when dry), fibrous.

mostly erect, sometimes reclining, (20-)30-60(-150) cm, glabrous, from rhizomes or branched caudices.

erect, to 100 cm, from rhizomes.

blade green, (2-)3-4x-ternately compound, membranous;

leaflets obliquely orbiculate or nearly cordate, apically 3-lobed, (5-)10-20 × (6-)8-12(-18) mm wide, lobe margins crenate, surfaces abaxially often glandular.

blade: leaflets reniform-cordate, apically 3-5-lobed, 15-50 mm wide, lobe margins crenate, surfaces glabrous to glandular.

terminal and axillary, panicles, open and leafy, many flowered.

terminal, panicles, narrow with ascending branches, many flowered.

sepals whitish or greenish, in staminate flowers ovate to elliptic, 3-5 mm; in pistillate flowers ovate to rhombic or broadly lanceolate, 1.5-2 mm;

filaments deep yellow or purplish, 4-7.5 mm;

anthers 2.2-3.4 mm, apiculate with tip to 0.8 mm;

stigma purplish.

sepals yellowish to purple, oblong, 1.5-5 mm;

filaments colored, not white;

anthers 3-4.5 mm, mucronate;

stigma purple.

7-11(-14), not reflexed, sessile to short-stipitate;

stipe 0-2 mm;

body oblanceolate to obliquely obovate-elliptic, strongly laterally compressed, (5-)9(-11) mm, glandular or glabrous, 3-4(-5)-veined on each side, veins ± parallel, converging toward ends (rarely branched or sinuous), not anastomosing-reticulate;

beak 1.5-4 mm.

4-13, erect, incurved, not reflexed, sessile;

body fusiform to ovoid, not laterally compressed, adaxial surface 4-6 mm, glandular, veins prominent, not anastomosing-reticulate;

beak (2-)2.5-4(-5) mm.